Combined valve and valve stem



v1f. P. HINCKLEY.

COMBINED VALVE AND VALVE STEM.

APPLICATION .FILED senso. 1 920. REAEWED FEB. 2|, 1922. lln PEBIIGd OC- 1922.

Patented @et lm, llEmm FEEJDEEIGE Il?. JEIINCELEV, OJE JAtCJKSON, MICHIGAN'.

AtIWtlIEIFI'ED VALVE END VALVE STEM.

Application filed September 30, 1920, Serial'ltlo.

To all 'wf/tom it may concern Be it known that I, FREDERICK P. HINGK- Lier, a citizen of the United States of4 America, and resident of Jackson, in the county of Jackson and State of Michi an, have invented certain new and useful mrovements in Combined fValves and Valve gtems, of which the following is a specification.

This invention relates to combined valves and valve stems and more particularly to a valve for internal combustion motors which obviates the necessity for regrinding the valves of that type.

The necessity for regrinding valves arises because of the fact that the valve stems become warped, or the guides for the valve stems warp, or on account of the distortion or warping of the cylinders. lit is an object of this invention, therefore, to lprovide a valve and a valve stem having oscillatory motion with relation to each other, in order that compensation for irregularities may automatically occur.

lfn certain types of valves it may be desirable and perhaps preferable to produce a valve and a stem having the characterf istics above indicated and to provide means whereby the valve may be removably applied to the valve stem in order that when the parts become worn, the worn part may be removed and a newone substituted at a cost less than the expense of regrinding the valve or otherwise repairing it.

An object of this invention, therefore. is to provide a novel valve and novel valve stem, and means whereby the two elements are securely held together to operate without lost motion between the joints so that the valves ofthe preferred constructions of the invention will have advantages in that they can be readily replaced on the valve stem without injury or damage to the said stem; and furthermore to produce a valve havin a stem which will permit the valve to a ways seat regardless of the position of the valve stem with relation to the valve, within predetermined bounds, and to produce a valve which may have oscillatory motion with` respect to the valvev stem so that the valve will seat regardless of the alinement between the valve head and the axis of the valve stem lit has been found in practice that a lvalve and stem made in accordance with the invention will permit the valve to seat even though the .boss 10a which 413,699. Renewed February 21, 1922. Ferial` No. 538,367.

valve stem or its guide has warped orif the cylinder has becomel warped.

A still further object of this invention is to provide novel means for clamping or holding the valve on the stem, the said means comprising comparatively few `in c Xpenslve parts having the objects and functions st-ated. i I W/Tith the foregoing and other objects in view, the invention consists in the details of construction, and in the arrangement and combination of parts to be hereinafter more fully set forth and claimed. y

ln describing the invention in detail, reference will be had to the accompanying drawlngs forming part of this specification wherein like characters denote correspond- 'ing parts in the several views, and -in whichl Figure' 1 illustrates a viewl in section through the valve and stem, a portion of the stem being` shown in elevation;

Figure 2 illustrates a sectional view on the line 2-2 of Fig. l;

Figure 3 illustrates a. sectional view embodying the modification;

Figure 4f illustrates an underneath plan view thereof, the valve stem being in section, and

Figure 5 illustrates a sectional view of a further modification.

lln these drawings 5aL denotes the valve stem having a flanged head 6, preferably rovided with a recess 7a in its upper end.

he valve 8a has anannular flange 9a in its inner side, which prior to its being bent, has a clearance sufiicient to receive the fiange of the stem; thereafter the said flange of the valve is rolled to cause it to extend partially across and engage the flange ot' the valve stem. The wall of the recess 7av is curved and theA valve stem has a lug or bears against the said curved surface.

ln Figures 3 and 4, which shows a preferred form of theinvention, the valve 8 has a downwardly curved flange 9 extending from its inne-r side, andthe said flange has ends with a space between them, the said space being at least equal to the diameter ofthe flanged head 6 of the valve steml to provide clearance space therefor. VThe inner surface of the flanged head 6 is slightly curved in order that it may fit the contour of the flange which it engages, and the said valve has a lug or boss 10 fitted against the i recessed surface of the end of the valve stem to effect a close. joint between the valve stem Isu them.`

That portion of the flange of the valve stem between the ends of the curved flange 9 is engaged by a clamping plate of the general cross sectional configuration of the curved flange 9, and it bears against the flange of the valve stem; being held in position in the present embodiment'of the in- -vention by fastenings 11 such as screws whichextend through the clamping plate andare imbedded in the valve.

The construction of the device vis well shown in the several views of the drawing, and it is believed that one skilled in the art willunderstand the practice of the invention from` such a disclosure.

In-Figure 5 I have illustrated a modified and preferred construction in Dwhich a valve stem 12 has a head 13 ofthe generalA form .of the one shown in the other figures of the drawing. The`l valve 14 in this embodiment has an aperture 15 for the reception of the valve stem and it has a concavity 16 in which the flange of the v alve stem is seated. The valve and valve stem are clamped together and held in assembled relation with each other by a clamping Rlate 15 which lies in a recess 16 in theupper orouter surface of the valve; the said clamping plate preferably having an inwardly curved oentral portion 17 lying in the recess 1,8 in the upper or outer end of the valve stem. The clamping plate in this embodiment of the invention is connected or attached to the valve .by fastenings' 19 such'as rivets which extend through the clamping plate and valve as fully shown in Figure 5.

From the foregoing description it will be apparent that the valve may lmove with respect to the axis of the valve Stem for the purpose ofinsuring the proper seating of the valve and should the valve illustrated in Fig. 5 b ecome impaired, it can be readily removed from the valve stem by `cutting the rivets to dissociate the valve and clampin plate and a new valve may be supplied an the old clamping plate may be employed, though if desired, a new valve and clampin plate may be employed and assembled wit the valve stem.

I claim:

1. In a combined valve and stem, a stem having a head provided with a flange at its outer end and a recess in its said outer end, a valve having a lug on its inner surface lying in the recess of the yvalve stem, and means carried' by the valve engaging the flange of the valve stem for holding the valve stem and valve in removable relation to each other.

2. In a combined valve and stem, a valve stem having a recess in its outer end, a valve having an aperture to receive the stem and having a portion bearing on thev wall of the recess of the Valve stem, a fiange on said valve engaging the valve stem whereby the valve has oscillatory motion with relation to the valve stem.

3. In a combined valve and stem, a valve stem having a flange, the said valve stem having a recess in its outer end, a valve having an aperture to receive the stem and a flange to engage the flange of the valve stem, a member carried by the valve extending into the recess of the valve stem and adapted to bear on the wall thereof, and a clamping plate secured to the said valve and engaging the flange of the valve ystem for -holding the valve stem and valve in removable relation to each other.

4. In a combined valve-and valve stem, a valve stem having a flange at its outer end, a valve having a concaved recess in its outer surface and an aperture approximately centrally thereof to receive the valve stem and flange, a clamping plate for clamping the valve stem and its flange in removable relation to the valve, and means for securing the clamping plate to the said valve.

FREDERICK P. HINCKLEY. 

